WO2009025248A1 - Knock-type writing instrument with impact relaxing device - Google Patents

Knock-type writing instrument with impact relaxing device Download PDF

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Publication number
WO2009025248A1
WO2009025248A1 PCT/JP2008/064660 JP2008064660W WO2009025248A1 WO 2009025248 A1 WO2009025248 A1 WO 2009025248A1 JP 2008064660 W JP2008064660 W JP 2008064660W WO 2009025248 A1 WO2009025248 A1 WO 2009025248A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
refill
rotor
slope
knock
Prior art date
Application number
PCT/JP2008/064660
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshiharu Namiki
Hisami Tamano
Original Assignee
Mitsubishi Pencil Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Pencil Co., Ltd. filed Critical Mitsubishi Pencil Co., Ltd.
Priority to EP08792506A priority Critical patent/EP2186648A4/en
Priority to US12/733,264 priority patent/US7931415B2/en
Priority to CN2008801019741A priority patent/CN101883687B/en
Publication of WO2009025248A1 publication Critical patent/WO2009025248A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/12—Ball-point pens with retractable ball points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B43K24/084—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons with saw-like or analogous cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K25/00—Attaching writing implements to wearing apparel or objects involving constructional changes of the implements
    • B43K25/02—Clips

Definitions

  • the present invention relates to a knock-type writing instrument, and more particularly, to a knock-type writing instrument having a mechanism for mitigating an impact that appears in a refill when the knock is released and when the safety is released.
  • the safety mechanism is a mechanism in which when the tip of the clip is lifted with the refill pen tip in the writing position protruding from the tip end of the shaft tube, the pen tip is immersed in the storage position in the shaft tube. Therefore, it is provided so that the clothes will not be soiled if they are accidentally inserted into the breast pocket of the clothes with the tip out.
  • the knock operation is performed from the pen tip writing position and the hand is released from the knock stick (hereinafter referred to as “return”).
  • the rotor is pressed backward by the repulsive force of the spring, so that the rotor cam protrusion 3 b 'moves vertically along the inner cylinder cam 2 b' (distance a, axial direction). ) And was in the pen tip storage position (see Fig. 11).
  • the impact on the refill is caused by the collision at the time of the vertical movement.
  • the ink inside the refill may be displaced, Since this may cause leakage or entrainment of air from the tip of the refill, A mechanism to alleviate the impact has been desired.
  • the clip position is maintained by restricting the movement of the rotor by the clip end locking.
  • the trochanter cam projection 3b ' moves vertically along the inner cylinder cam 2b' (distance a, axial movement only) to the pen tip storage position, but the tip of the clip is lifted for safety. If you perform a single release operation (hereinafter referred to as “safety single operation”), the rotor movement restriction is removed and the rotor cam protrusion moves vertically to the pen tip storage position.
  • safety single operation hereinafter referred to as “safety single operation”
  • the cam projection 3 b ′ moved vertically (distance i) together with the sliding body 6 a ′.
  • the refill (ink container) is also impacted by the collision during the vertical movement during the safety operation, and the above-mentioned problem has occurred. Therefore, there is a mechanism for reducing the impact during the vertical movement. It was desired.
  • Japanese Patent Application Laid-Open No. 2 00-0 2 1 8 9 8 9 discloses a knock type writing instrument with safety using a spring as a buffer member.
  • the object of the present invention is to solve the above problems and devise the shape of the cam to realize impact mitigation not only for writing instruments without a safety mechanism but also for writing instruments with a safety mechanism without increasing the number of parts. It is to provide a knock-type writing instrument.
  • a refill having a writing portion at the front end, a spring for urging it to the rear, and a rear end of the refill that projects from the rear end of the shaft cylinder in conjunction with the refill.
  • a knock type writing instrument that is in a writing position by pressing the knock bar and projecting the refill from the front end of the shaft cylinder, and the refill is placed between the knock bar and the refill.
  • a rotor for supporting, the knock bar and the rotor each have a corresponding cam slope for rotation, and the rotor is moved by the axially forward and backward knocking action by the repulsive force of the spring.
  • the cam slope for positioning provided on the side surface of the cylindrical part of the rotor corresponds to this. Abutting against the first slope of the cam provided on the inner cylinder, and the vertical surface of the positioning cam of the rotor abuts against the vertical wall of the cam provided on the inner cylinder, thereby causing axial load and rotation.
  • the positioning cam slope of the rotor continues to the vertical wall of the cam.
  • a knock-type writing instrument in which the third inclined surface of the cam provided on the inner cylinder has a step in the axial direction.
  • the refill having the writing portion at the front end, the spring for urging the write back, and the rear end of the shaft that is arranged behind the refill and projects from the rear end of the shaft cylinder It has a knock bar, and it is in a writing position by pressing the knock bar to project the refill from the front end of the shaft cylinder, and the clip locking ball locks the sliding body.
  • a knock-type writing instrument that holds the writing position by being locked to a protrusion, and includes a rotator that supports the refill between the knock bar and the refill, and the knock bar and the rotor are Each has a corresponding rotating cam slope, and the repulsive force of the spring causes the rotor to rotate in a predetermined direction by a predetermined angle by knocking forward and backward in the axial direction.
  • the positioning cam inclined surface provided on the side surface of the cylindrical portion of the rotor corresponds to the first cam of the cam provided on the inner cylinder.
  • An axial load and rotation are caused by abutting in turn on the slope and the cam slope provided on the sliding body, and the vertical surface of the positioning cam of the rotor abutting on the vertical wall of the cam provided on the shaft cylinder.
  • the positioning cam slope provided on the rotor contacts the cam slope provided on the shaft cylinder, and further provided on the inner cylinder.
  • the sliding body which rotates in contact with the second inclined surface of the cam, moves to the retreat limit position and keeps the refill in the stowed position, and is movable in the longitudinal direction in the notch portion of the shaft cylinder.
  • FIG. 1A is a cross-sectional view of the knock type writing instrument of the second and second embodiments, showing a state where the refill is in the storage position.
  • FIG. 1B is a cross-sectional view of the knock-type writing instrument of the second and third embodiments, showing a state where the refill is in the writing position.
  • FIG. 1C is a cross-sectional view of the knock-type writing instrument of the second and third embodiments, showing a state in which the refill is in the storage position after the safety is activated.
  • FIG. 2 is a cross-sectional view of the clip of FIG.
  • Figure 3A shows the A-A cross section of Figure 1.
  • Fig. 3B shows a cross-sectional view of Fig. 1 BB
  • Figure 4 is a perspective view of the knock bar of Figure 1.
  • FIG. 5 is a perspective view of the rotor of FIG.
  • FIG. 6 is a perspective view of the sliding body of FIG.
  • FIG. 7A to 7E are schematic views for explaining the movement of the cam protrusion of the first embodiment.
  • 8A to 8E are schematic diagrams for explaining the movement of the cam protrusion in the rerun operation of the second embodiment.
  • 9A to 9E are schematic diagrams for explaining the movement of the cam projection in the safety operation of the second embodiment.
  • FIGS. 10A to 10D are schematic views for explaining the movement of the cam protrusion of the third embodiment.
  • FIG. 11A to 11D are schematic views for explaining the movement of the cam projection of the conventional method.
  • FIGS. 12A to D are schematic diagrams for explaining the movement of the cam projection in the prototype cam arrangement. BEST MODE FOR CARRYING OUT THE INVENTION
  • the sliding body 6 shown in FIGS. 1A and 1B is not provided, and this portion is occupied by the shaft cylinder 1.
  • a refill 7 having a writing part at the tip and a spring 5 for biasing it backward 5 And a knock bar 4 projecting from the shaft cylinder 1 in conjunction with the refill 7, and by pressing the knock bar 4 and projecting the refill 7 from the front part of the shaft cylinder 1, writing is possible.
  • a rotor 3 for supporting the refill 7 is provided between the refill 7 in front of the knock bar 4 and the knock bar 4 and the rotor 3 are knock cams 4 a and knock cams corresponding to the cam slopes, respectively.
  • the rotor 3 is configured to rotate only in a predetermined direction by a predetermined angle by knocking forward in the axial direction, each having 3a.
  • the refill 7 is always urged rearward by the spring 5 and the above-described cam protrusion 3 b of the rotor 3 and the corresponding cam 2 b of the inner cylinder 2 Rotate in the same direction as the rotation by knock bar 4 and rotor 3. That is, the rotor 3 rotates at a predetermined angle, makes one turn at a certain point (in the above configuration, with two knocks), and repeats this operation.
  • the inner cylinder 2 shown in Fig. 1 A, B and Fig. 2 is constructed integrally with the clip 2 a, and the inner wall of the inner cylinder has a groove 2 c for preventing the rotation of the knock bar 4 and a refill. 7, an inner cylinder cam 2b for positioning is provided. Inside The shape of the cylindrical cam 2b will be described in detail later.
  • a knock bar 4 shown in FIGS. 1A, B and 4 is a cylindrical member disposed at the tail end of a writing instrument.
  • a detent 4 b that slides in the groove 2 c is provided.
  • the rotor 3 shown in FIGS. 1A, B, and 5 is a cylindrical member having a cam projection 3 b for positioning the knock cam 3 a and the refill 7 that contacts the knock bar cam 4 a of the knock bar 4. is there.
  • a spring 5 for urging the refill 7 toward the knock bar 4 is disposed inside the tip of the shaft tube 1.
  • the knock bar cam 4a and the knock cam 3a have mountain-shaped cam slopes corresponding to each other, and the pitch of the mountain-shaped pitches are shifted so that the knock operation in the axial direction can be performed.
  • the rotor 3 is given a rotational force in a certain direction, and rotates the rotor 3 in a certain direction for every knock operation in conjunction with the operation of a cam projection 3b described later.
  • the tip of the rotor 3 is always in contact with the rear end of the refill 7, and the front and rear positions of the cam protrusion 3 b determine the pen tip position of the tip of the refill 7.
  • knocking operation is the operation from pushing the knocking stick 4 to releasing the finger and releasing it, and moving the pen tip from the retracted state to the writing position.
  • knock release is an operation in which the knock bar 4 is pushed in and released, but the pen tip is moved from the writing position to the storage position.
  • the position of the cam projection 3 b of the rotor 3 is shown with respect to the developed inner cylinder cam 2 b formed on the inner surface of the inner cylinder 2.
  • the upper part of the figure shows the direction of the tip, and the cam protrusion 3 b of the rotor 3 is given a rotational force by the cam mechanism of the knock bar 4 and the rotor 3 described above. Move from left to right.
  • FIG. 7A to 7E show the movement of the cam projection 3b of the rotor 3 during the return operation.
  • Fig. 7 A shows the state where the pen tip protrudes during writing.
  • the cam projection 3 b is pressed against the first slope 2 e of the inner cylinder cam 2 b and the vertical wall by the repulsive force of the spring 5 and fixed. Has been.
  • the cam protrusion 3 b slides and rotates on the first slope 2 g of the inner cylinder cam 2 b and then reaches the position shown in FIG. 7D through the second vertical movement. At this time, the slope of the cam projection 3 b collides with the second half of the third slope of the inner cylinder cam 2 b (hereinafter referred to as “second half slope”) 2 h again, and the impact is transmitted to the refill 7.
  • second half slope the second half of the third slope of the inner cylinder cam 2 b
  • the cam protrusion 3b slides and rotates on the slope 2h of the latter half of the inner cylinder cam 2b, stops against the vertical wall of the inner cylinder cam 2b, and moves to the pen tip storage position shown in Fig. 7E. It reaches.
  • Table 1 shows the distances b and c of the two vertical movements in the above configuration, together with the degree of impact at the time of collision at this point.
  • the vertical movement distance per time is shorter in this embodiment than in the conventional Kernock type, and the number of bubbles generated is reduced even when compared with the above. This means that the impact on Refill 7 has been mitigated. In this embodiment, the impact of return operation Therefore, the above-described problems can be prevented.
  • One mechanism for mitigating the impact is to divide the vertical movement part by dividing the vertical movement part (in this embodiment, it is divided into two parts). It can be reduced compared to the case where it does not, and the impact at the time of each collision can be reduced.
  • the other is that by moving the slope in addition to the vertical movement, the spring repulsive force is divided into components along the slope, and the speed in the slope direction is less than the vertical movement speed. Among them, the velocity component in the vertical direction is even smaller.
  • This embodiment is different from the configuration of the first embodiment by providing a safety mechanism, and the cam arrangement is slightly different accordingly. This will be described below.
  • common components other than those described above are denoted by the same reference numerals, and description of common functions is omitted.
  • the knock bar 4 and the rotor 3 have knock bar cams 4 a and knock cams 3 a that are cam slopes corresponding to the knock bars 4 and the rotor 3, respectively. It is the same in that it is configured to do so.
  • the inner cylinder 2 shown in FIGS. 1A to 1C and FIG. 2 is formed integrally with the clip 2a, and the inner wall surface of the inner cylinder has a groove 2 for preventing the knock bar 4 from rotating.
  • An inner cylinder cam 2 b for positioning the c and the refill 7 is provided. The shape of the inner cylinder cam 2b will be described in detail later.
  • a locking ball 2 d for engagement with the sliding body 6 is installed at the tip of the clip 2 a.
  • the sliding body 6 shown in FIGS. 3A, B, and 6 is a rod-shaped member, and as shown in FIGS. 1A to C and FIGS. 3A and B, the shaft cylinder 1 in the inner portion of the clip 2a 1 (Cross section A— A), which is exposed to the outside of the shaft tube 1.
  • the rear end portion of the sliding body 6 is slidably fitted in a groove provided on the inner surface of the inner cylinder 2 (cross section B-B).
  • the sliding body 6 has a sliding body cam 6 a with which the cam projection 3 b of the rotor 3 abuts on the inner side of the rear end, and a clip 2 a on the outer end of the sliding body 6. And a locking projection 6b that engages with the locking ball 2d.
  • the cam protrusion 3b of the rotor 3 rotates along the inner cylinder cam 2b.
  • the cam projection 3b is configured to stop rotating when it hits the vertical wall of the shaft cam la.
  • the pen tip of the refill 7 is at the writing position shown in FIGS. 8A and 9A.
  • the cam protrusion 3 b of the rotor 3 moves from the inner cylinder cam 2 b.
  • the axial load applied to the rotor 3, that is, the repulsive force of the spring 5 and the load due to writing, is transmitted from the cam projection 3b of the rotor 3 to the sliding body cam 6a, and the locking projection of the sliding body 6 6 It is supported by the engaging part between b and the locking ball 2d of the clip 2a.
  • each cam which is a characteristic part of the present embodiment, and the movement of the cam projection 3b of the rotor 3 during the re-running operation by releasing the knock will be described with reference to FIGS.
  • FIGS. 8A to 8E are schematic views showing the positional relationship between the cam projection 3b of the rotor 3, the inner cylinder cam 2b, the shaft cylinder force la, and the sliding body cam 6a.
  • the arrangement of the cam projection 3b of the rotor 3, the shaft cylinder cam 1a, and the sliding body cam 6a is shown with respect to the developed inner cylinder cam 2b.
  • the inner cylinder cam 2 b of the present embodiment has a groove 2 i for the sliding body cam of one safety mechanism, and the wall on the rotational direction side of the groove 2 i is lower.
  • An opening is provided between the upper cylindrical cam 1a.
  • the upper end of the wall is connected to 2 g of the first half of the second slope. The function of this part will be described later Explain in minutes.
  • FIG. 8A to 8E show the movement of the cam projection 3b of the rotor 3 during the return operation.
  • Fig. 8A shows a state in which the pen tip protrudes during writing.
  • the cam projection 3b is axially moved to a position continuous with the first slope of the inner cylinder cam 2b by the repulsive force of the spring 5.
  • the sliding body cam 6a is fixed by being pressed against the vertical wall of the cylindrical barrel cam la.
  • first half slope 2 g of the first half of the second slope of the inner cylinder cam 2 b
  • the cam projection 3b slides and rotates on the slope 2g of the first half of the inner cylinder cam 2b, and then reaches the position shown in FIG. 8D through the second vertical movement. At this time, the slope of the cam projection 3 b collides with the second half of the second slope of the inner cylinder cam 2 b (hereinafter referred to as “second half slope”) 2 h again, and the impact is transmitted to the refill 7.
  • second half slope the second half of the second slope of the inner cylinder cam 2 b
  • an axial step is provided on the front and rear half of the second slope of the inner cylinder cam 2b to shorten the vertical movement distance per cam projection 3b.
  • Table 1 shows the distances d and e for each of the two vertical movements in the above configuration, and the bubble count, which is a parameter for the degree of impact at the time of collision.
  • each cam which is a characteristic part of the present embodiment, and the operation of the cam projection 3b of the rotor 3 in the safety operation will be described with reference to FIGS.
  • FIGS. 9A to E show the movement of the cam projection 3b of the rotor 3 during one safety operation, as in Figs. 8A to E.
  • the tip of the pen protrudes during writing.
  • the cam protrusion 3 b is fixed by being pressed against the inclined surface of the sliding body cam 6 a in the axial direction and against the vertical wall of the axial barrel force 1 a in the rotational direction by the repulsive force of the spring 5.
  • the cam projection 3b collides with the second slope 2h of the second slope of the inner cylindrical cam 2b by the repulsive force of the spring 5, as shown in FIG. 9D. Further, it rotates along this slope to reach the storage position shown in Fig. 9E.
  • the safety mechanism works, By the knocking operation, the sliding body 6 is pushed by the leading end of the detent 4 b of the knocking bar 4 and returns to the predetermined position shown in FIG. 9A.
  • the first and second steps are provided in only one of the second inclined surfaces of the two inner cylindrical cams 2b. Yes.
  • the other second slope (the side adjacent to the groove for the sliding body 6) is provided with the latter half of the slope provided on the other second slope extending to the front half. .
  • the configuration as described above is such that the gap between the inclined surface 2h of the inner cylinder cam 2b adjacent to the groove for the sliding body cam 6a and the shaft cylinder cam la is widened, so that the cam projection during the safety operation This is so that 3b can pass the above-mentioned interval smoothly.
  • Table 1 shows the distance of each vertical movement in the case of the above configuration and the number of bubbles generated indicating the degree of impact due to this collision. It can be seen that the impact is also reduced in this embodiment.
  • the contact surface between the cam protrusion 3 b and the sliding body cam 6 a at the time of writing shown in FIG. 10B is a position where the contact surface is further depressed from the first slope of the inner cylinder cam 2 b. ing. This is because the clip retaining ball 2 d and the sliding body 6 are not separated from each other in order to firmly receive the component force in the rotational direction of the repulsive force by the spring 5 on the cam projection 3 b with the vertical wall of the shaft cam 1 a. A predetermined play is provided at the engaging portion with the locking projection 6b so that it is pushed to the above position.
  • the first vertical movement distance h of 0 D is equal to the first vertical movement distance f of FIG. 9B in the second embodiment.
  • Figures 12 A to D show a comparative example (prototype) with the embodiment of the present invention.
  • This form is a form that does not take the above-mentioned countermeasures for impact relaxation in a writing instrument with a safety function.
  • Table 1 shows the distances g and i and the number of bubbles generated.
  • the above configuration was designed to reduce the impact by reducing the speed at the slope 2 h 'of the inner cylinder cam 2 b' with one vertical movement part.
  • Return operation Distance g
  • Safety Single operation Distance i) The impact shock was large, and the impact mitigation effect was insufficient.
  • the second and third embodiments provide an axial step on the front and rear half of the second slope of the inner cylinder cam 2b.
  • the height of the slope in the first half is increased and the vertical wall portion of the shaft barrel cam la is shortened to ensure a space for the cam protrusion 3b to pass during the safety operation.
  • the vertical movement distance of the cam projection 3b at one time is shortened compared to that in the conventional configuration, and the impact at the time of the collision of the cam slope is mitigated accordingly. It was done.
  • the number of bubbles generated Compared with the configuration, it can be seen that in Embodiments 1 to 3, the impact is reduced.
  • the shock at the time of the return operation and the safety operation can be alleviated.
  • Writing instruments can be provided with a small number of parts.

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)

Abstract

When a knock rod is pushed from the state of writing time shown in Fig. 8A, the cam projection (3b) of a rotor turns to the right side and goes to a position shown in Fig. 8B. When the finger is released, the cam projection (3b) is slipped on the bevel and turned by the repulsion of a spring to go to a position shown in Fig. 8C via first vertical movement (distance d) and thence reaches a position shown in Fig. 8D via second vertical movement (distance e). The bevel of the cam projection (3b) collides twice against the bevel of an inner tube cam (2b) and its impact is transmitted to a refill (7), but the impact of one time collision on the refill can be reduced by providing a level difference between the first and second halves of the inner tube cam (2b) thereby shortening the one time vertical movement distance of the cam projection (3b).

Description

衝撃.緩和装置付きノック式筆記具 Knock type writing instrument with shock absorber
技術分野 Technical field
本発明はノック式筆記具に関し、 特にノック解除時及びセーフテ ィー解除時にリフィ一ルにか明かる衝撃を緩和する機構を備えたノッ ク式筆記具に関する。  The present invention relates to a knock-type writing instrument, and more particularly, to a knock-type writing instrument having a mechanism for mitigating an impact that appears in a refill when the knock is released and when the safety is released.
田  Rice field
書  book
背景技術 Background art
ここで、 セーフティー機構とは、 リフィールのペン先が軸筒の先 端から突出した筆記位置にある状態でクリ ップの先端が持ち上がる と、 ペン先が軸筒内の収納位置に没入する機構のことで、 誤ってべ ン先を出したまま服の胸ポケッ ト等に差し込んだ場合に服を汚さな いために設けられている。  Here, the safety mechanism is a mechanism in which when the tip of the clip is lifted with the refill pen tip in the writing position protruding from the tip end of the shaft tube, the pen tip is immersed in the storage position in the shaft tube. Therefore, it is provided so that the clothes will not be soiled if they are accidentally inserted into the breast pocket of the clothes with the tip out.
従来、 上記ノック式筆記具としていくつかの方式が知ちれており 、 その一つであるカーンノック式筆記具では、 ペン先筆記位置から ノック操作をし、 ノック棒から手を離すと （以降 「リターン動作時 」 と記す。 ） 、 スプリングの反発力で回転子が後方へ押し付けられ るため、 回転子のカム突起 3 b ' は内筒カム 2 b ' に沿って垂直移 動 （距離 a、 軸方向の移動のみ） してペン先収納位置となっていた (図 1 1参照） 。  Conventionally, several methods are known as the above-mentioned knock-type writing instrument. In the Kernock-type writing instrument, which is one of them, the knock operation is performed from the pen tip writing position and the hand is released from the knock stick (hereinafter referred to as “return”). During operation, the rotor is pressed backward by the repulsive force of the spring, so that the rotor cam protrusion 3 b 'moves vertically along the inner cylinder cam 2 b' (distance a, axial direction). ) And was in the pen tip storage position (see Fig. 11).
このノ.ック解除時 （=リターン動作時） における上記垂直移動時 の衝突によって、 リフィール （インク収容体） に衝撃がかかり、 特 に水性インクやゲルインクにおいては、 リフィール内部のインクが ずれたり、 漏れ出したり、 リフィール先端より空気を巻き込んで筆 記カスレを生じさせたりする可能性があるため、 この垂直移動時の 衝撃を緩和する機構が望まれていた。 When the knock is released (= return operation), the impact on the refill (ink container) is caused by the collision at the time of the vertical movement. Especially in the case of water-based ink or gel ink, the ink inside the refill may be displaced, Since this may cause leakage or entrainment of air from the tip of the refill, A mechanism to alleviate the impact has been desired.
また、 セーフティー機能付きのカーンノック式筆記具では、 クリ ップの先端の係止が回転子の動きを規制することで筆記位置を保つ ており、 リターン動作時には、 通常のカーンノック式と同じく、 回 転子のカム突起 3 b ' は内筒カム 2 b ' に沿って垂直移動 （距離 a 、 軸方向の移動のみ） してペン先収納位置となるが、 クリ ップの先 端を持ち上げてセーフティ一解除操作を行う'と （以降 「セーフティ 一動作時」 と記す。 ） 、 回転子の動きの規制がなくなり、 回転子の カム突起はペン先収納位置まで、 垂直移動する。 例として図 1 2の ようなカム構成の場合、 カム突起 3 b ' は摺動体 6 a ' とともに垂 直移動 （距離 i ) していた。  In the Kernock type writing instrument with safety function, the clip position is maintained by restricting the movement of the rotor by the clip end locking. The trochanter cam projection 3b 'moves vertically along the inner cylinder cam 2b' (distance a, axial movement only) to the pen tip storage position, but the tip of the clip is lifted for safety. If you perform a single release operation (hereinafter referred to as “safety single operation”), the rotor movement restriction is removed and the rotor cam protrusion moves vertically to the pen tip storage position. As an example, in the case of the cam configuration shown in FIG. 12, the cam projection 3 b ′ moved vertically (distance i) together with the sliding body 6 a ′.
このセーフティー動作時における上記垂直移動時の衝突によって も、 リフィ一ル （インク収容体） に衝撃がかかり、 上記の記載の問 題が発生していたため、 この垂直移動時の衝撃を緩和する機構が望 まれていた。  The refill (ink container) is also impacted by the collision during the vertical movement during the safety operation, and the above-mentioned problem has occurred. Therefore, there is a mechanism for reducing the impact during the vertical movement. It was desired.
これに対し、 特開 2 0 0 0— 2 1 8 9 8 9号公報には緩衝部材と してスプリングを用いるセーフティー付きのノック式筆記具が開示 されている。  On the other hand, Japanese Patent Application Laid-Open No. 2 00-0 2 1 8 9 8 9 discloses a knock type writing instrument with safety using a spring as a buffer member.
しかしながら、 上記方式では部品点数が増えてしまうという問題 がある。 上記の水性インクやゲルインクは最近使用されることが多 くなつてきており、 上記の衝撃による不具合に対し、 簡易な方式に よる解決策が望まれていた。 発明の開示  However, the above method has a problem that the number of parts increases. The above water-based inks and gel inks have been frequently used recently, and there has been a demand for a solution by a simple method for the above-mentioned problems caused by impact. Disclosure of the invention
. 本発明の目的は上記問題を解決し、 カムの形状を工夫することで 、 セーフティ一機構のない筆記具のみならずセーフティ一機構を備 えた筆記具についても部品点数を増やすことなく衝撃緩和を実現す るノック式の筆記具を提供することにある。 The object of the present invention is to solve the above problems and devise the shape of the cam to realize impact mitigation not only for writing instruments without a safety mechanism but also for writing instruments with a safety mechanism without increasing the number of parts. It is to provide a knock-type writing instrument.
本発明によれば、 前端に筆記部を有するリ フィ一ルと、 それを後 方へ付勢するスプリングと、 上記リフィ一ルの後方に配置され上記 リフィールに連動して軸筒後端より突出するノック棒を有し、 該ノ ック棒を押圧してリフィールを上記軸筒の前端から突出させること によって筆記位置となるノック式筆記具であって、 上記ノック棒と リフィールとの間にリフィールを支持する回転子を備え、 ノック棒 と上記回転子はそれぞれに対応した回転用のカム斜面を有しており 、 上記スプリングの反発力により、 軸方向前方および後方へのノッ ク動作によって回転子が所定角度ずつ一定方向にのみ回転し、 リフ ィールが軸筒内に没入した状態からノック操作を行うと、 回転子の 円筒部側面に設けられた位置決め用のカム斜面がこれに対応して内 筒に設けられたカムの第一の斜面に当接し、 回転子の上記位置決め 用のカムの垂直面が内筒に設けられたカムの縦壁に当接することに より軸方向荷重および回転力を支持されてリ フィールを上記筆記位 置に保ち、 リ フィールが筆記位置にある状態からノック操作を行う と、 回転子の上記位置決め用のカム斜面が、 上記カムの縦壁に連続 して内筒に設けられたカムの第二の斜面と当接し、 次に内筒に設け られたカムの第三の斜面に当接して回転し、 後退限位置に移行して リフィールを収納位置に保つように構成されるノック式筆記具にお いて、 内筒に設けられた上記カムの第三の斜面は、 軸方向に段差を 有しているノック式筆記具が提供される。  According to the present invention, a refill having a writing portion at the front end, a spring for urging it to the rear, and a rear end of the refill that projects from the rear end of the shaft cylinder in conjunction with the refill. A knock type writing instrument that is in a writing position by pressing the knock bar and projecting the refill from the front end of the shaft cylinder, and the refill is placed between the knock bar and the refill. A rotor for supporting, the knock bar and the rotor each have a corresponding cam slope for rotation, and the rotor is moved by the axially forward and backward knocking action by the repulsive force of the spring. When the knocking operation is performed from a state where the shaft rotates only in a certain direction by a predetermined angle and the refill is immersed in the shaft cylinder, the cam slope for positioning provided on the side surface of the cylindrical part of the rotor corresponds to this. Abutting against the first slope of the cam provided on the inner cylinder, and the vertical surface of the positioning cam of the rotor abuts against the vertical wall of the cam provided on the inner cylinder, thereby causing axial load and rotation. When the force is supported and the refill is kept in the writing position, and the knocking operation is performed from the state where the refill is in the writing position, the positioning cam slope of the rotor continues to the vertical wall of the cam. Abuts against the second inclined surface of the cam provided on the inner cylinder, then contacts and rotates on the third inclined surface of the cam provided on the inner cylinder, and moves to the retreat limit position to keep the refill at the storage position. In the knock-type writing instrument configured as described above, a knock-type writing instrument is provided in which the third inclined surface of the cam provided on the inner cylinder has a step in the axial direction.
また、 本発明によれば、 前端に筆記部を有するリ フィールと、 そ れを後方へ付勢するスプリングと、 上記リフィールの後方に配置さ れ上記リフィールに連動して軸筒後端より突出するノック棒を有し 、 該ノック棒を押圧してリフィールを上記軸筒の前端から突出させ ることによって筆記位置となり、 クリ ップの係止玉が摺動体の係止 突起に係止することで上記筆記位置を保持するノック式筆記具であ つて、 上記ノック棒とリフィ一ルとの間にリフィ一ルを支持する回 転子を備え、 ノック棒と上記回転子はそれぞれに対応した回転用の カム斜面を有しており、 上記スプリ ングの反発力により、 軸方向前 方および後方へのノック動作によって回転子が所定角度ずつ一定方 向にのみ回転し、 リフィ一ルが軸筒内に没入した状態からノック操 作を行うと、 回転子の円筒部側面に設けられた位置決め用のカム斜 面がこれに対応して内筒に設けられたカムの第一の斜面及び上記摺 動体に設けられたカム斜面に順に当接し、 回転子の上記位置決め用 のカムの垂直面が軸筒に設けられたカムの縦壁に当接することによ り軸方向荷重および回転力を支持されてリフィ一ルを筆記位置に保 ち、 リフィールが筆記位置にある状態からノック操作を行うと、 回 転子に備えられた上記位置決め用のカム斜面が、 軸筒に設けられた カム斜面と当接し、 さらに内筒に設けられたカムの第二の斜面と当 接して回転し、 後退限位置に移行してリフィールを収納位置に保つ とともに、 軸筒の切り欠き部に、 長手方向に移動可能に設けられた 摺動体は内向き突起を有し、 リフィールが筆記位置にあるときは、 上記内向き突起を回転子の位置決め用のカムの後端に係合させ、 摺 動体に形成された係止突起がクリップ本体に形成された係止段部に 係止してリフィ一ルを筆記位置に保ち、 摺動体の上記係止突起とク リ ップ本体の上記係止段部との間の係止が解除されると、 スプリン グによってリフィ一ルが摺動体と共に後退位置まで戻され、 さらに 回転子の位置決め用のカムが、 軸筒に設けられたカム斜面の後方に 設けられた隙間を通過することにより、 後退限位置に移行すること で、 リフィールを収納位置に保つように構成されるノック式筆記具 において、 内筒に設けられた上記カムの第二の斜面は、 軸方向に段 差を有するノック式筆記具が提供される。 図面の簡単な説明 In addition, according to the present invention, the refill having the writing portion at the front end, the spring for urging the write back, and the rear end of the shaft that is arranged behind the refill and projects from the rear end of the shaft cylinder It has a knock bar, and it is in a writing position by pressing the knock bar to project the refill from the front end of the shaft cylinder, and the clip locking ball locks the sliding body. A knock-type writing instrument that holds the writing position by being locked to a protrusion, and includes a rotator that supports the refill between the knock bar and the refill, and the knock bar and the rotor are Each has a corresponding rotating cam slope, and the repulsive force of the spring causes the rotor to rotate in a predetermined direction by a predetermined angle by knocking forward and backward in the axial direction. When the knock operation is performed while the shaft is immersed in the shaft cylinder, the positioning cam inclined surface provided on the side surface of the cylindrical portion of the rotor corresponds to the first cam of the cam provided on the inner cylinder. An axial load and rotation are caused by abutting in turn on the slope and the cam slope provided on the sliding body, and the vertical surface of the positioning cam of the rotor abutting on the vertical wall of the cam provided on the shaft cylinder. Written in the refill with support of power If the refill is in the writing position and the knocking operation is performed, the positioning cam slope provided on the rotor contacts the cam slope provided on the shaft cylinder, and further provided on the inner cylinder. The sliding body, which rotates in contact with the second inclined surface of the cam, moves to the retreat limit position and keeps the refill in the stowed position, and is movable in the longitudinal direction in the notch portion of the shaft cylinder. When there is an inward projection and the refill is in the writing position, the inward projection is engaged with the rear end of the positioning cam for the rotor, and a locking projection formed on the sliding body is formed on the clip body. When the latch is locked to the latching step and the refill is kept in the writing position, the latch between the latching projection of the sliding body and the latching step of the clip body is released. , The refill moves to the retracted position together with the sliding body by spring. In addition, the rotor positioning cam moves through the gap provided at the rear of the cam slope provided on the shaft cylinder, so that it moves to the retreat limit position so that the refill is kept at the storage position. In the knock-type writing instrument configured as described above, a knock-type writing instrument in which the second inclined surface of the cam provided in the inner cylinder has a step in the axial direction is provided. Brief Description of Drawings
図 1 Aは、 第二及び第 Ξの実施形態のノック式筆記具の断面図で あり、 リフィ ルが収納位置にある状態を示 。  FIG. 1A is a cross-sectional view of the knock type writing instrument of the second and second embodiments, showing a state where the refill is in the storage position.
図 1 Bは、 第二及び第三の実施形態のノック式筆記具の断面図で あり、 リフィ一ルが筆記位置にある状態を示す。  FIG. 1B is a cross-sectional view of the knock-type writing instrument of the second and third embodiments, showing a state where the refill is in the writing position.
図 1 Cは、 第二及び第三の実施形態のノック式筆記具の断面図で あり、 リフィ一ルがセーフティ一作動後の収納位置にある状態を示 す。  FIG. 1C is a cross-sectional view of the knock-type writing instrument of the second and third embodiments, showing a state in which the refill is in the storage position after the safety is activated.
図 2は、 図 1のクリ ップの断面図であ 。  FIG. 2 is a cross-sectional view of the clip of FIG.
図 3 Aは、 図 1の A— A断面図を示す  Figure 3A shows the A-A cross section of Figure 1.
図 3 Bは、 図 1 の B— B断面図を示す  Fig. 3B shows a cross-sectional view of Fig. 1 BB
図 4は、 図 1 のノック棒の斜視図であ  Figure 4 is a perspective view of the knock bar of Figure 1.
図 5は、 図 1 の回転子の斜視図である  FIG. 5 is a perspective view of the rotor of FIG.
図 6は、 図 1の摺動体の斜視図である  FIG. 6 is a perspective view of the sliding body of FIG.
図 7 A〜 Eは 、 第一の実施形態のカム突起の動きを説明するため の模式図である  7A to 7E are schematic views for explaining the movement of the cam protrusion of the first embodiment.
図 8 A〜 Eは 、 第二の実施形態のリ夕ーン動作におけるカム突起 の動きを説明するための模式図である。  8A to 8E are schematic diagrams for explaining the movement of the cam protrusion in the rerun operation of the second embodiment.
図 9 A〜Eは、 第二の実施形態のセーフティー動作におけるカム 突起の動きを説明するための模式図である。  9A to 9E are schematic diagrams for explaining the movement of the cam projection in the safety operation of the second embodiment.
図 1 0 A〜Dは、 第三の実施形態のカム突起の動きを説明するた めの模式図である。  FIGS. 10A to 10D are schematic views for explaining the movement of the cam protrusion of the third embodiment.
図 1 1 A〜Dは、 従来の方式のカム突起の動きを説明するための 模式図である。  11A to 11D are schematic views for explaining the movement of the cam projection of the conventional method.
図 1 2 A〜Dは、 試作型カム配置におけるカム突起の動きを説明 するための模式図である。 発明を実施するための最良の形態 FIGS. 12A to D are schematic diagrams for explaining the movement of the cam projection in the prototype cam arrangement. BEST MODE FOR CARRYING OUT THE INVENTION
以下に、 本発明の実施形態を図面に基づいて具体的に説明する。 まず、 一般的構成及ぴ作用について説明し、 次に各実施形態の特徴 部分について説明する。  Embodiments of the present invention will be specifically described below with reference to the drawings. First, the general configuration and operation will be described, and then the features of each embodiment will be described.
なお、 第一の実施形態はセーフティー機構を持たないため、 図 1 A、 図 1 Bの摺動体 6は備えておらず、 この部分は軸筒 1により占 められている。  Since the first embodiment does not have a safety mechanism, the sliding body 6 shown in FIGS. 1A and 1B is not provided, and this portion is occupied by the shaft cylinder 1.
第一の実施形態は、 図 · 1 Α、 図 I B (セ一フティー機構部分は除 く） に示すように、 先端に筆記部を有するリフィ一ル 7 とそれを後 方へ付勢するスプリング 5 とリフィール 7に連動して軸筒 1より突 出するノック棒 4を有し、 そのノック棒 4を押圧してリフィール 7 を軸筒 1の前部から突出させることによって筆記可能状態となる。  In the first embodiment, as shown in Fig. 1 Α and Fig. IB (excluding the safety mechanism), a refill 7 having a writing part at the tip and a spring 5 for biasing it backward 5 And a knock bar 4 projecting from the shaft cylinder 1 in conjunction with the refill 7, and by pressing the knock bar 4 and projecting the refill 7 from the front part of the shaft cylinder 1, writing is possible.
ノック棒 4の前方のリフィ一ル 7 との間にはリフィール 7 を支持 する回転子 3を設け、 このノック棒 4と回転子 3はそれぞれに対応 したカム斜面であるノック棒カム 4 aとノックカム 3 aをそれぞれ 有して軸方向前方へのノック動作によって回転子 3が所定角度ずつ 一定方向にのみ回転するように構成される。  A rotor 3 for supporting the refill 7 is provided between the refill 7 in front of the knock bar 4 and the knock bar 4 and the rotor 3 are knock cams 4 a and knock cams corresponding to the cam slopes, respectively. The rotor 3 is configured to rotate only in a predetermined direction by a predetermined angle by knocking forward in the axial direction, each having 3a.
さらに、 ノック動作後の押圧を止めたときにはリフィール 7はス プリング 5によって常に後方へ付勢されており、 回転子 3のカム突 起 3 bとそれに対応した内筒 2のカム 2 bによって前述のノック棒 4と回転子 3による回転と同一方向へ回転させる。 つまり、 回転子 3は所定の角度で回転して、 ある時点で （上記構成では 2回のノッ クで） 1周し、 この動作を繰り返す。  Further, when the pressing after the knocking operation is stopped, the refill 7 is always urged rearward by the spring 5 and the above-described cam protrusion 3 b of the rotor 3 and the corresponding cam 2 b of the inner cylinder 2 Rotate in the same direction as the rotation by knock bar 4 and rotor 3. That is, the rotor 3 rotates at a predetermined angle, makes one turn at a certain point (in the above configuration, with two knocks), and repeats this operation.
以下に、 各構成部品について詳しく説明する。  Hereinafter, each component will be described in detail.
図 1 A、 B及ぴ図 2に示す内筒 2は、 クリ ップ 2 aと一体で構成 されており、 内筒の内壁面にはノック棒 4の回り止め用の溝 2 c及 びリフィール 7の位置決め用の内筒カム 2 bが配設されている。 内 筒カム 2 bの形状については後に詳しく説明する。 The inner cylinder 2 shown in Fig. 1 A, B and Fig. 2 is constructed integrally with the clip 2 a, and the inner wall of the inner cylinder has a groove 2 c for preventing the rotation of the knock bar 4 and a refill. 7, an inner cylinder cam 2b for positioning is provided. Inside The shape of the cylindrical cam 2b will be described in detail later.
図 1 A、 B及び図 4に示すノック棒 4は、 筆記具の尾端に配設さ れる円筒状の部材であって、 その先端部にはノック棒カム 4 a力 先端近傍の外周部には上記溝 2 c内を摺動する回り止め 4 bが配設 されている。  A knock bar 4 shown in FIGS. 1A, B and 4 is a cylindrical member disposed at the tail end of a writing instrument. A detent 4 b that slides in the groove 2 c is provided.
図 1 A、 B及び図 5に示す回転子 3は、 上記ノック棒 4のノック 棒カム 4 aと当接するノックカム 3 a及びリフィール 7 の位置決め 用のカム突起 3 bを備えた円筒状の部材である。  The rotor 3 shown in FIGS. 1A, B, and 5 is a cylindrical member having a cam projection 3 b for positioning the knock cam 3 a and the refill 7 that contacts the knock bar cam 4 a of the knock bar 4. is there.
軸筒 1の先端内部にはリフィ一ル 7 をノック棒 4に向けて付勢す るスプリング 5が配設されている。  A spring 5 for urging the refill 7 toward the knock bar 4 is disposed inside the tip of the shaft tube 1.
上記ノック棒カム 4 aとノックカム 3 aとはお互いに対応する山 形状のカム斜面を有しており、 この山形のピッチがずらされて配設 されていることにより、 軸方向へのノック動作により回転子 3には 一定方向への回転力が与えられ、 後述のカム突起 3 bの動作と相俟 つて回転子 3 をノック操作ごとに一定方向へ回転させる。  The knock bar cam 4a and the knock cam 3a have mountain-shaped cam slopes corresponding to each other, and the pitch of the mountain-shaped pitches are shifted so that the knock operation in the axial direction can be performed. The rotor 3 is given a rotational force in a certain direction, and rotates the rotor 3 in a certain direction for every knock operation in conjunction with the operation of a cam projection 3b described later.
また、 回転子 3の先端部は常にリフィ一ル 7の後端部に当接して おり、 カム突起 3 bの前後位置がリフィ一ル 7の先端のペン先位置 を決めることになる。  Further, the tip of the rotor 3 is always in contact with the rear end of the refill 7, and the front and rear positions of the cam protrusion 3 b determine the pen tip position of the tip of the refill 7.
次に、 上記構成のノック式筆記具の作用について説明する。 まず 、 ノック操作について説明する。  Next, the operation of the knock type writing instrument having the above configuration will be described. First, the knock operation will be described.
ノック操作とは、 ノック棒 4を押し込んでその後、 指を放して開 放するまでの動作であって、 ペン先を後退した状態から筆記位置に 移行させる場合を指す。 これに対してノック解除とは、 同じくノッ ク棒 4を押し込んでから放す動作であるが、 ペン先を筆記位置から 収納位置に移行させる場合を指す。  The knocking operation is the operation from pushing the knocking stick 4 to releasing the finger and releasing it, and moving the pen tip from the retracted state to the writing position. On the other hand, knock release is an operation in which the knock bar 4 is pushed in and released, but the pen tip is moved from the writing position to the storage position.
ノック棒 4をノック操作すると、 ノック棒に押され、 回転子 3 と リフィール 7が前進する。 上記のように、 回転子 3は （ノック棒力 ム 4 aとノックカム 3 aの関係から） 回転力を付与されているが、 内筒カム 2 bの縦壁で回転を規制されている。 回転子 3のカム突起 3 bが、 内筒カム 2 bの縦壁を越えた位置まで前進すると、 規制が なくなって回転子 3はわずかに回転する。 When the knock bar 4 is knocked, the rotor 3 and the refill 7 move forward by being pushed by the knock bar. As mentioned above, rotor 3 (knock bar force Rotation force is applied, but the rotation is restricted by the vertical wall of the inner cylinder cam 2b. When the cam projection 3b of the rotor 3 advances to a position beyond the vertical wall of the inner cylinder cam 2b, the restriction is removed and the rotor 3 rotates slightly.
ノック棒 4から手を離すと、 回転子 3 のカム突起 3 bが、 内筒力 ム 2 bに沿って回転運動する。 この際、 通常のカーンノックでは筆 記位置で内筒カム 2 bの縦壁に当たり回転が止まるように、 内筒力 ム 2 bが切ってある。 回転が止まるこのときに、 リフィール 7先端 のペン先が図 7 Aに示す筆記位置となる。  When the hand is released from the knock bar 4, the cam projection 3b of the rotor 3 rotates along the inner cylinder force 2b. At this time, the inner cylinder force 2b is cut so that the normal karn knock hits the vertical wall of the inner cylinder cam 2b at the writing position and stops rotating. When the rotation stops, the pen tip at the tip of Refill 7 becomes the writing position shown in Fig. 7A.
次に、 本実施形態の特徴部分である内筒カム 2 bの構成と、 ノッ ク解除によるリターン動作において、 内筒カム 2 bに接して回転移 動及び垂直移動を行う回転子 3のカム突起 3 bの動作について図 7 A〜Eにて説明する。  Next, in the configuration of the inner cylinder cam 2b, which is a characteristic part of the present embodiment, and in the return operation by releasing the knock, the cam protrusion of the rotor 3 that makes rotational movement and vertical movement in contact with the inner cylinder cam 2b The operation of 3b will be described with reference to FIGS.
内筒 2の内面に形成された内筒カム 2 bを展開したものに対して 回転子 3のカム突起 3 bの位置を示したものである。 図の上方がぺ ン先方向を示しており、 回転子 3のカム突起 3 bは上述したノック 棒 4と回転子 3 とのカム機構によって回転力を与えられるため、 ノ ック動作毎に図の左から右へ移動する。  The position of the cam projection 3 b of the rotor 3 is shown with respect to the developed inner cylinder cam 2 b formed on the inner surface of the inner cylinder 2. The upper part of the figure shows the direction of the tip, and the cam protrusion 3 b of the rotor 3 is given a rotational force by the cam mechanism of the knock bar 4 and the rotor 3 described above. Move from left to right.
図 7 A〜Eは、 リターン動作時の回転子 3のカム突起 3 bの動き を示している。 図 7 Aは、 筆記時の状態でペン先が突出した状態を 示し、 カム突起 3 bはスプリング 5の反発力により内筒カム 2 bの 第一の斜面 2 e及び縦壁に押し付けられて固定されている。  7A to 7E show the movement of the cam projection 3b of the rotor 3 during the return operation. Fig. 7 A shows the state where the pen tip protrudes during writing. The cam projection 3 b is pressed against the first slope 2 e of the inner cylinder cam 2 b and the vertical wall by the repulsive force of the spring 5 and fixed. Has been.
この状態からノック棒 4を押すとカム突起 3 bは、 図の上方へと 前進して内筒カム 2 bの縦壁を越える位置まで達した後、 内筒カム 2 bの縦壁による規制が外れるため、 スプリング 5の反発力と上述 の回転用のカム斜面の作用によって、 図 7 Bに示すように右側に回 転して内筒カム 2 bの第二の斜面 2 f に押し付けられる。 そして、 指を離すとカム突起 3 bは、 さらに回転して第一の垂直 移動を経て図 7 Cに示す位置に至る。 この際、 カム突起 3 bの斜面 が内筒カム 2 bの第三の斜面の前半部分 （以下 「前半の斜面」 と記 す。 ） 2 gと衝突し、 その衝撃がリフィール 7に伝わる。 When the knock bar 4 is pushed from this state, the cam projection 3b moves upward in the figure and reaches a position exceeding the vertical wall of the inner cylindrical cam 2b, and then the regulation by the vertical wall of the inner cylindrical cam 2b is restricted. Therefore, the spring 5 rotates to the right as shown in FIG. 7B and is pressed against the second inclined surface 2 f of the inner cylindrical cam 2 b by the repulsive force of the spring 5 and the action of the rotating cam inclined surface described above. When the finger is released, the cam projection 3b further rotates and reaches the position shown in FIG. 7C through the first vertical movement. At this time, the slope of the cam projection 3 b collides with the first half of the third slope of the inner cylinder cam 2 b (hereinafter referred to as “first slope”) 2 g, and the impact is transmitted to the refill 7.
さらに、 カム突起 3 bは内筒カム 2 bの上記前半の斜面 2 gを滑 つて回転した後、 第二の垂直移動を経て図 7 Dに示す位置に至る。 この際、 カム突起 3 bの斜面が内筒カム 2 bの第三の斜面の後半部 分 （以下 「後半の斜面」 と記す。 ） 2 hと再び衝突し、 その衝撃が リフィール 7に伝わる。  Further, the cam protrusion 3 b slides and rotates on the first slope 2 g of the inner cylinder cam 2 b and then reaches the position shown in FIG. 7D through the second vertical movement. At this time, the slope of the cam projection 3 b collides with the second half of the third slope of the inner cylinder cam 2 b (hereinafter referred to as “second half slope”) 2 h again, and the impact is transmitted to the refill 7.
その後、 カム突起 3 bは内筒カム 2 bの上記後半の斜面 2 hを滑 つて回転し、 内筒カム 2 bの縦壁に当接して停止し、 図 7 Eに示す ペン先収納位置に至る。  After that, the cam protrusion 3b slides and rotates on the slope 2h of the latter half of the inner cylinder cam 2b, stops against the vertical wall of the inner cylinder cam 2b, and moves to the pen tip storage position shown in Fig. 7E. It reaches.
従来、 上記の衝突は 1回だけ発生していたのであり、 その際の垂 直移動距離は上記構成における 2箇所の垂直移動距離の和にほぼ等 しかった。 このように、 内筒カム 2 bの第三の斜面の前後半に軸方 向の段差を設けてカム突起 3 bの 1回あたりの垂直移動距離を短縮 することができる。  Conventionally, the above-mentioned collision occurred only once, and the vertical movement distance at that time was almost equal to the sum of the two vertical movement distances in the above configuration. In this way, a step in the axial direction can be provided in the front and rear half of the third inclined surface of the inner cylinder cam 2b to shorten the vertical movement distance of the cam projection 3b once.
上記構成における 2箇所の垂直移動の距離 b、 c を表 1 に示し、 合わせてこの箇所での衝突時の衝撃の影響度合いを示す。 なお、 表 1 において 「気泡発生数」 はリターン動作もしくはセーフティー動 作を 5 0回繰り返した時のリフィール 7内の気泡の発生数であって 、 試験回数 n = 5の平均値を示す。 これは、 上記衝搫の影響度合い を比較するパラメ一夕として採用したものである。  Table 1 shows the distances b and c of the two vertical movements in the above configuration, together with the degree of impact at the time of collision at this point. In Table 1, “Number of bubbles generated” is the number of bubbles generated in the refill 7 when the return operation or safety operation is repeated 50 times, and shows the average value of the number of tests n = 5. This was adopted as a parame- ter to compare the impact of the above-mentioned impact.
表 1 を見ると、 従来のカーンノック式と比較して本実施形態では 一回あたりの垂直移動距離が短くなり、 上記気泡発生数を比較して も減少している。 このことは、 リフィール 7 に加わる衝撃が緩和さ れたことを意味している。 本実施形態により リターン動作の衝撃に よる上述の不具合を防止することができる。 As can be seen from Table 1, the vertical movement distance per time is shorter in this embodiment than in the conventional Kernock type, and the number of bubbles generated is reduced even when compared with the above. This means that the impact on Refill 7 has been mitigated. In this embodiment, the impact of return operation Therefore, the above-described problems can be prevented.
なお、 上記衝撃が緩和されるメカニズムとしては、 一つには、 垂 直移動部分を分割 （本実施形態では 2分割） することで、 1回あた りの垂直移動時の最終速度を、 分割しない場合に比べて減少させる ことができ、 各衝突の際の衝撃が減少するという点が考えられる。 もう一つは、 垂直移動に加えて斜面移動をさせることにより、 ス プリングの反発力が斜面に沿った成分に分割され、 斜面方向の速度 は垂直移動速度より減少し、 その斜面方向の速度の内、 垂直方向の 速度成分はさらに小さくなるという点である。  One mechanism for mitigating the impact is to divide the vertical movement part by dividing the vertical movement part (in this embodiment, it is divided into two parts). It can be reduced compared to the case where it does not, and the impact at the time of each collision can be reduced. The other is that by moving the slope in addition to the vertical movement, the spring repulsive force is divided into components along the slope, and the speed in the slope direction is less than the vertical movement speed. Among them, the velocity component in the vertical direction is even smaller.
リフィ一ルのインク状態に不具合をもたらすものとして問題にさ れているのは垂直方向の衝撃であって、 水平方向速度による横方向 の衝撃は問題とならないからである。 ただし、 スペースの問題があ り、 垂直移動部分をなく してすベて斜面移動とすることはできない 。 このため、 垂直移動部分の配置が問題となり、 上記考察を衝撃影 響度の確認試験で裏付けることにより、 本実施形態の構成を見出し たものである。  It is the vertical impact that causes problems in the refill ink condition, because the horizontal impact due to the horizontal speed is not a problem. However, due to space problems, it is impossible to move all the slopes without the vertical moving part. For this reason, the arrangement of the vertically moving parts becomes a problem, and the configuration of the present embodiment has been found by supporting the above consideration by the impact impact confirmation test.
次に、 第二の実施形態としてセーフティ一機構を備えたノック式 の筆記具において衝撃緩和機構を設けた請求項 2の発明の実施形態 について説明する。 まず、 本実施形態の一般的構成及び作用につい て説明し、 次に特徴部分について説明する。  Next, an embodiment of the invention of claim 2 in which an impact mitigating mechanism is provided in a knock type writing instrument provided with a safety mechanism as a second embodiment will be described. First, the general configuration and operation of this embodiment will be described, and then the features will be described.
本実施形態の構成は、 セーフティー機構を備えることにより上記 第一の実施形態の構成とは異なっており、 これに伴いカム配置も若 干異なっている。 この点について以下に説明する。 なお、 上記以外 の共通する構成部品については同一の符号とし、 共通する作用につ いては説明を省略する。  The configuration of this embodiment is different from the configuration of the first embodiment by providing a safety mechanism, and the cam arrangement is slightly different accordingly. This will be described below. In addition, common components other than those described above are denoted by the same reference numerals, and description of common functions is omitted.
図 1 A〜 Cに示すように、 ノック棒 4を押圧してリフィール 7 を 軸筒 1の前部から突出させることによって筆記可能状態となるのは 第一の実施形態と同様であるが、 本実施形態ではクリップの係止玉As shown in Figs. 1A to C, by pressing the knock bar 4 and causing the refill 7 to protrude from the front part of the shaft tube 1, it becomes possible to write. The same as the first embodiment, but in this embodiment, the clip locking ball
2 dが摺動体 6の係止突起 6 bに係止することで、 スプリング 5の 反発力と筆記荷重の軸方向の分力を後述の摺動体カム 6 aで支え、 回転方向の分力は軸筒 1の内壁に設けられた後述の軸筒カム 1 aに より支えることで上記筆記可能状態を保持する点が異なる。 2 d is locked to the locking projection 6 b of the sliding body 6 so that the repulsive force of the spring 5 and the axial component of the writing load are supported by the sliding cam 6 a to be described later. The difference is that the writable state is maintained by being supported by a shaft cylinder cam 1 a (described later) provided on the inner wall of the shaft cylinder 1.
ノック棒 4と回転子 3がそれぞれに対応したカム斜面であるノッ ク棒カム 4 aとノックカム 3 aを有して軸方向前方へのノック動作 によって回転子 3が所定角度ずつ一定方向にのみ回転するように構 成される点は同様である。  The knock bar 4 and the rotor 3 have knock bar cams 4 a and knock cams 3 a that are cam slopes corresponding to the knock bars 4 and the rotor 3, respectively. It is the same in that it is configured to do so.
以下に、 各構成部品について説明する。  Hereinafter, each component will be described.
本実施形態においては、 図 1 A〜 C及び図 2に示す内筒 2は、 ク リップ 2 aと一体で構成されており、 内筒の内壁面にはノック棒 4 の回り止め用の溝 2 c及びリフィール 7の位置決め用の内筒カム 2 bが配設されている。 内筒カム 2 bの形状については後に詳しく説 明する。 また、 クリップ 2 aの先端には摺動体 6 との係合用の係止 玉 2 dが設置されている。  In this embodiment, the inner cylinder 2 shown in FIGS. 1A to 1C and FIG. 2 is formed integrally with the clip 2a, and the inner wall surface of the inner cylinder has a groove 2 for preventing the knock bar 4 from rotating. An inner cylinder cam 2 b for positioning the c and the refill 7 is provided. The shape of the inner cylinder cam 2b will be described in detail later. Further, a locking ball 2 d for engagement with the sliding body 6 is installed at the tip of the clip 2 a.
図 1 A〜 C及び図 4に示すノック棒 4、 図 1 A〜 C及び図 5に示 す回転子 3の構成、 作用については、 第一の実施形態と同様である 図 1 A〜 C、 図 3 A、 B及び図 6に示す摺動体 6は、 棒状の部材 であって、 図 1 A〜 C、 図 3 A、 Bに示すように、 クリ ップ 2 aの 内側部分の軸筒 1 に設けられた切り欠き部に設けられ （断面 A— A ) 、 この部分は軸筒 1の外部に露出している。 摺動体 6の後端部は 、 内筒 2の内面に設けられた溝に摺動可能に嵌合されている （断面 B— B ) 。  1A to C and the knock bar 4 shown in FIG. 4 and the configuration and operation of the rotor 3 shown in FIGS. 1A to C and FIG. 5 are the same as those in the first embodiment. The sliding body 6 shown in FIGS. 3A, B, and 6 is a rod-shaped member, and as shown in FIGS. 1A to C and FIGS. 3A and B, the shaft cylinder 1 in the inner portion of the clip 2a 1 (Cross section A— A), which is exposed to the outside of the shaft tube 1. The rear end portion of the sliding body 6 is slidably fitted in a groove provided on the inner surface of the inner cylinder 2 (cross section B-B).
摺動体 6はその後端内側に、 上記回転子 3のカム突起 3 bが当接 する摺動体カム 6 aを備えており、 その先端外側にはクリップ 2 a の係止玉 2 dと係合する係止突起 6 bを備えている。 The sliding body 6 has a sliding body cam 6 a with which the cam projection 3 b of the rotor 3 abuts on the inner side of the rear end, and a clip 2 a on the outer end of the sliding body 6. And a locking projection 6b that engages with the locking ball 2d.
次に、 上記構成のノック式筆記具の作用について説明する。  Next, the operation of the knock type writing instrument having the above configuration will be described.
ペン先が軸筒 1 に没入している状態からノック棒 4を押し込んで 手を離すと、 回転子 3のカム突起 3 bが、 内筒カム 2 bに沿って回 転運動し、 回転子 3のカム突起 3 bは、 軸筒カム l aの縦壁に当た つて、 回転が止まるように構成される。 この回転が止まる位置でリ フィール 7先端のペン先が図 8 A及び図 9 Aに示す筆記位置となる またこのとき、 回転子 3のカム突起 3 bは、 内筒カム 2 bから移 動して、 摺動体カム 6 a上にある。 回転子 3 にかかる軸長方向の荷 重、 すなわちスプリング 5の反発力及び筆記による荷重は、 回転子 3のカム突起 3 bから摺動体カム 6 aに伝わり、 摺動体 6の係止突 起 6 bとクリップ 2 aの係止玉 2 dとの係合部によって、 支えられ る。  When the knock bar 4 is pushed in and the hand is released from the state where the pen tip is immersed in the shaft cylinder 1, the cam protrusion 3b of the rotor 3 rotates along the inner cylinder cam 2b. The cam projection 3b is configured to stop rotating when it hits the vertical wall of the shaft cam la. At the position where the rotation stops, the pen tip of the refill 7 is at the writing position shown in FIGS. 8A and 9A. At this time, the cam protrusion 3 b of the rotor 3 moves from the inner cylinder cam 2 b. On the sliding body cam 6a. The axial load applied to the rotor 3, that is, the repulsive force of the spring 5 and the load due to writing, is transmitted from the cam projection 3b of the rotor 3 to the sliding body cam 6a, and the locking projection of the sliding body 6 6 It is supported by the engaging part between b and the locking ball 2d of the clip 2a.
次に、 本実施形態の特徴部分である各カムの構成と、 ノック解除 によるリ夕一ン動作時の回転子 3のカム突起 3 bの動きについて図 8 A〜Eにて説明する。  Next, the configuration of each cam, which is a characteristic part of the present embodiment, and the movement of the cam projection 3b of the rotor 3 during the re-running operation by releasing the knock will be described with reference to FIGS.
図 8 A〜 Eは、 回転子 3 のカム突起 3 bと内筒カム 2 b、 軸筒力 ム l a及び摺動体カム 6 aとの位置関係を示す模式図であり、 内筒 2の内面に形成された内筒カム 2 bを展開したものに対して回転子 3のカム突起 3 b、 軸筒カム 1 a及び摺動体カム 6 aの配置を示し たものである。  8A to 8E are schematic views showing the positional relationship between the cam projection 3b of the rotor 3, the inner cylinder cam 2b, the shaft cylinder force la, and the sliding body cam 6a. The arrangement of the cam projection 3b of the rotor 3, the shaft cylinder cam 1a, and the sliding body cam 6a is shown with respect to the developed inner cylinder cam 2b.
図 7 A〜Eと異なり、 本実施形態の内筒カム 2 bは、 セーフティ 一機構の摺動体カム用の溝 2 i を有しており、 さらに溝 2 i の回転 方向側の壁は低くなつており、 上部の軸筒カム 1 aとの間に開口部 が設けられている。 上記壁の上端は第二の斜面の前半の壁 2 gに接 続している。 この部分の作用については後にセーフティー動作の部 分で説明する。 Unlike FIGS. 7A to E, the inner cylinder cam 2 b of the present embodiment has a groove 2 i for the sliding body cam of one safety mechanism, and the wall on the rotational direction side of the groove 2 i is lower. An opening is provided between the upper cylindrical cam 1a. The upper end of the wall is connected to 2 g of the first half of the second slope. The function of this part will be described later Explain in minutes.
図 8 A〜Eは、 リターン動作時の回転子 3のカム突起 3 bの動き を示している。 図 8 Aは、 筆記時の状態でペン先が突出した状態を 示し、 カム突起 3 bはスプリング 5の反発力により、 軸方向には内 筒カム 2 bの第一の斜面に連続する位置に配設された摺動体カム 6 aの斜面に、 回転方向には軸筒カム l aの縦壁に押し付けられて固 定されている。  8A to 8E show the movement of the cam projection 3b of the rotor 3 during the return operation. Fig. 8A shows a state in which the pen tip protrudes during writing. The cam projection 3b is axially moved to a position continuous with the first slope of the inner cylinder cam 2b by the repulsive force of the spring 5. In the rotational direction, the sliding body cam 6a is fixed by being pressed against the vertical wall of the cylindrical barrel cam la.
この状態からノック棒 4を押すと回転子 3 のカム突起 3 bは、 図 の上方へと前進して軸筒カム 1 aの縦壁を越える位置まで達した後 、 軸筒カム 1 aの縦壁による規制が外れるためスプリング 5の反発 力と上述の回転用のカム斜面の作用によって、 図 8 Bに示すように 右側に回転して軸筒カム 1 aの斜面に押し付けられる。  When the knock bar 4 is pushed from this state, the cam projection 3b of the rotor 3 moves upward in the figure and reaches a position exceeding the vertical wall of the shaft barrel cam 1a, and then the vertical projection of the shaft cam 1a. Since the restriction by the wall is removed, the repulsive force of the spring 5 and the action of the cam slope for rotation described above rotate it to the right as shown in Fig. 8B and press it against the slope of the shaft cam 1a.
そして、 指を離すとカム突起 3 bは、 さらに回転して第一の垂直 移動を経て図 8 Cに示す位置に至る。 この際、 カム突起 3 bの斜面 が内筒カム 2 bの第二の斜面の前半部分 （以下 「前半の斜面」 と記 す。 ） 2 gと衝突し、 その衝撃がリフィール 7 に伝わる。  When the finger is released, the cam protrusion 3b further rotates and reaches the position shown in FIG. 8C via the first vertical movement. At this time, the slope of the cam projection 3 b collides with 2 g of the first half of the second slope of the inner cylinder cam 2 b (hereinafter referred to as “first half slope”), and the impact is transmitted to the refill 7.
さらに、 カム突起 3 bは内筒カム 2 bの上記前半の斜面 2 gを滑 つて回転した後、 第二の垂直移動を経て図 8 Dに示す位置に至る。 この際、 カム突起 3 bの斜面が内筒カム 2 bの第二の斜面の後半部 分 （以下 「後半の斜面」 と記す。 ) 2 hと再び衝突し、 その衝撃が リフィール 7に伝わる。  Further, the cam projection 3b slides and rotates on the slope 2g of the first half of the inner cylinder cam 2b, and then reaches the position shown in FIG. 8D through the second vertical movement. At this time, the slope of the cam projection 3 b collides with the second half of the second slope of the inner cylinder cam 2 b (hereinafter referred to as “second half slope”) 2 h again, and the impact is transmitted to the refill 7.
その後、 カム突起 3 bは内筒カム 2 bの上記後半の斜面 2 hを滑 つて回転-し、 内筒カム 2 bの縦壁に当接して停止し、 図 8 Eに示す ペン先収納位置に至る。  After that, the cam projection 3b slides and rotates on the slope 2h of the latter half of the inner cylinder cam 2b, stops against the vertical wall of the inner cylinder cam 2b, and is shown in FIG. 8E. To.
本実施形態においても第一の実施形態と同様に、 内筒カム 2 bの 第二の斜面の前後半に軸方向の段差を設けてカム突起 3 bの 1回あ たりの垂直移動距離を短縮することで、 リフィ一ルにかかる衝突時 の衝撃を減少させることができる。 衝撃緩和のメカニズムについて も上述と同様と考えられる。 In this embodiment as well, as in the first embodiment, an axial step is provided on the front and rear half of the second slope of the inner cylinder cam 2b to shorten the vertical movement distance per cam projection 3b. By doing so, at the time of a collision on the refill Can reduce the impact. The mechanism of impact relaxation is considered to be the same as described above.
上記構成における 2箇所の垂直移動の各々の距離 d、 e と、 衝突 時の衝撃の影響度合いのパラメータである気泡 生数とを表 1 に示 す。  Table 1 shows the distances d and e for each of the two vertical movements in the above configuration, and the bubble count, which is a parameter for the degree of impact at the time of collision.
さらに、 本実施形態の特徴部分である各カムの構成と、 セーフテ ィー動作における回転子 3のカム突起 3 bの動作について図 9 〜 Eにて説明する。  Further, the configuration of each cam, which is a characteristic part of the present embodiment, and the operation of the cam projection 3b of the rotor 3 in the safety operation will be described with reference to FIGS.
図 9 A〜Eは図 8 A〜Eと同様にセーフティ一動作時の回転子 3 のカム突起 3 bの動きを示しており、 図 9 Aは、 筆記時の状態でぺ ン先が突出した状態を示す。 カム突起 3 bはスプリング 5の反発力 により、 軸方向には摺動体カム 6 aの斜面に、 回転方向には軸筒力 ム 1 aの縦壁に押し付けられて固定されている。  9A to E show the movement of the cam projection 3b of the rotor 3 during one safety operation, as in Figs. 8A to E. In Fig. 9A, the tip of the pen protrudes during writing. Indicates the state. The cam protrusion 3 b is fixed by being pressed against the inclined surface of the sliding body cam 6 a in the axial direction and against the vertical wall of the axial barrel force 1 a in the rotational direction by the repulsive force of the spring 5.
図 9 Aに示す状態からクリ ップ 2 aを持ち上げると、 上述のよう に、 摺動体 6の係止突起 6 bとクリ ップ 2 a先端の係止玉 2 dの係 合が外れ、 リフィール 7 と回転子 3 と摺動体 6は、 後方へ移動する 図 9 Bに示すように摺動体 6がカム突起 3 bとともに後退限に達 する際に第一の垂直移動が行われ、 カム突起 3 bにかかる衝撃がリ フィール 7に伝わる。 同時に後退限において、 回転子 3のカム突起 3 bは軸筒カム 1 aの縦壁の規制がなくなるので、 回転が可能にな り、 カム突起 3 bは内筒カム 2 bの第二の斜面の内、 前半の斜面 2 gに沿って右方に回転し、 図 9 Cの状態に至る。  When the clip 2a is lifted from the state shown in Fig. 9A, as described above, the engagement protrusion 6b of the sliding body 6 and the engagement ball 2d at the tip of the clip 2a are disengaged, and the refill 7 and the rotor 3 and the sliding body 6 move rearward. As shown in FIG. 9B, when the sliding body 6 reaches the retreating limit together with the cam protrusion 3 b, the first vertical movement is performed. The impact on b is transmitted to Refill 7. At the same time, the cam protrusion 3b of the rotor 3 is not restricted by the vertical wall of the shaft barrel cam 1a, so that it can be rotated, and the cam projection 3b is the second slope of the inner barrel cam 2b. Among them, it rotates to the right along 2 g of the slope in the first half and reaches the state shown in Fig. 9C.
そしてカム突起 3 bはスプリ ング 5の反発力により図 9 Dに示す ように、 第二の垂直移動を行って内筒カム 2 bの第二の斜面の内、 後半の斜面 2 hに衝突し、 さらにこの斜面に沿って回転して図 9 E に示す収納位置に至る。 なお、 セーフティー機構が働いた後、 最初 のノック動作によって、 摺動体 6はノック棒 4の回り止め 4 bの先 端に押されて、 図 9 Aに示す所定の位置に戻る。 As shown in FIG. 9D, the cam projection 3b collides with the second slope 2h of the second slope of the inner cylindrical cam 2b by the repulsive force of the spring 5, as shown in FIG. 9D. Further, it rotates along this slope to reach the storage position shown in Fig. 9E. After the safety mechanism works, By the knocking operation, the sliding body 6 is pushed by the leading end of the detent 4 b of the knocking bar 4 and returns to the predetermined position shown in FIG. 9A.
内筒カム 2 bの第二の斜面に段差を設けて前後半に分け、 従来 1 回であった垂直移動を 2回にして段階的に垂直移動を行わせること で、 このセーフティ一動作においても 1回あたりの衝突の衝撃を大 幅に軽減することができる。 上記 2箇所の垂直移動距離 f 、 e と、 この衝突による衝撃の影響度合いを示す気泡発生数とを表 1 に示す 表 1 によれば、 リターン動作の場合もセーフティー動作の場合も 本実施形態の気泡発生数は従来より減少しており、 衝撃緩和の効果 が発揮されていることが分かる。  By providing a step on the second slope of the inner cylinder cam 2b and dividing it into the first and second half, the vertical movement that used to be once was performed twice, and the vertical movement was performed stepwise, so even in this safety single operation. The impact of one collision can be greatly reduced. According to Table 1, which shows the vertical movement distances f and e at the two locations and the number of bubbles generated indicating the degree of impact due to this collision, Table 1 shows that in this embodiment, both in return operation and safety operation. It can be seen that the number of bubbles generated is lower than before, and the effect of shock relaxation is exerted.
次に第三の実施形態として請求項 2の発明の別の実施形態につい て説明する。  Next, another embodiment of the invention of claim 2 will be described as a third embodiment.
まず、 構成について図 1 0 A〜Dにて説明する。  First, the configuration will be described with reference to FIGS.
図 1 0 Aに示すように、 本実施形態では第二の実施形態とは異な り、 2箇所ある内筒カム 2 bの第二の斜面のうち、 1箇所のみに前 後半の段差を設けている。 もう 1箇所の第二の斜面 （摺動体 6用の 溝に隣接している側） には上記他方の第二の斜面に設けた後半の斜 面が前半部まで延長したものが設けられている。  As shown in FIG. 10A, in the present embodiment, unlike the second embodiment, the first and second steps are provided in only one of the second inclined surfaces of the two inner cylindrical cams 2b. Yes. The other second slope (the side adjacent to the groove for the sliding body 6) is provided with the latter half of the slope provided on the other second slope extending to the front half. .
上記のような構成としたのは、 摺動体カム 6 a用の溝に隣接する 内筒カム 2 bの斜面 2 hと軸筒カム l aとの間隔を広く して、 セ一 フティー動作時にカム突起 3 bがスムーズに上記間隔を通過できる ようにするためである。  The configuration as described above is such that the gap between the inclined surface 2h of the inner cylinder cam 2b adjacent to the groove for the sliding body cam 6a and the shaft cylinder cam la is widened, so that the cam projection during the safety operation This is so that 3b can pass the above-mentioned interval smoothly.
このような構成とすることで、 リターン動作時においては、 図 1 0 Cに示すように、 第一の垂直移動 （距離 d ) の際、 摺動体カム 6 aの部分の内筒カム 2 bの斜面は、 カム突起 3 bとは衝突しない。 カム突起 3 bとの衝突はもう一方の内筒カム 2 bの斜面との間だけ に起こる。 これに対し、 第二の垂直移動 （距離 e ) の際は、 2箇所 の内筒カム 2 bの斜面でカム突起 3 bとの衝突が起こる。 With this configuration, during the return operation, as shown in FIG. 10 C, during the first vertical movement (distance d), the inner cylinder cam 2b of the sliding body cam 6a is The slope does not collide with the cam projection 3b. Collision with cam projection 3b is only between the slope of the other inner cylinder cam 2b To happen. On the other hand, during the second vertical movement (distance e), a collision with the cam projection 3b occurs on the slopes of the two inner cylindrical cams 2b.
また、 セーフティー動作時においては、 図 1 0 Dに示すように、 第一の垂直移動 （距離 h ) の際、 摺動体カム 6 aの部分の内筒カム 2 bの斜面は、 カム突起 3 bとは衝突しない。 カム突起 3 bとの衝 突はもう一方の内筒カム 2 bの斜面との間だけに起こる。 これに対 し、 第二の垂直移動 （距離 e ) の際は、 2箇所の内筒カム 2 bの斜 面でカム突起 3 bとの衝突が起こる。  Also, during safety operation, as shown in Fig. 10D, during the first vertical movement (distance h), the slope of the inner cylindrical cam 2b in the portion of the sliding body cam 6a is the cam projection 3b. There is no conflict. The collision with the cam projection 3b occurs only between the slope of the other inner cylinder cam 2b. On the other hand, during the second vertical movement (distance e), a collision with the cam projection 3b occurs on the inclined surfaces of the two inner cylindrical cams 2b.
上記構成とした場合の各垂直移動の距離と、 この衝突による衝撃 の影響度合い示す気泡発生数を表 1 に示す。 本実施形態においても 衝撃が緩和されているのが分かる。  Table 1 shows the distance of each vertical movement in the case of the above configuration and the number of bubbles generated indicating the degree of impact due to this collision. It can be seen that the impact is also reduced in this embodiment.
なお、 上記構成においては図 1 0 Bに示す筆記時においてカム突 起 3 bと摺動体カム 6 aとの接触面が、 内筒カム 2 bの第一の斜面 よりさらに沈み込んだ位置となっている。 これは、 カム突起 3 bに かかるスプリング 5による反発力の回転方向の分力を軸筒カム 1 a の縦壁でしっかりと受け止めるために、 クリ ップ係止玉 2 dと摺動 体 6の係止突起 6 bとの係合部に所定の遊びを設けて上記位置まで 押し込まれるように構成したものである。 セーフティー作動時はク リップ 2 aを持ち上げて、 この遊び分がなくなる位置で摺動体 6の 係止突起 6 bとクリ ップ 2 a先端の係止玉 2 dの係合が外れるため 、 図 1 0 Dの第一の垂直移動距離 hは、 第二の実施形態における図 9 Bの第一の垂直移動距離 f と等しい。  In the configuration described above, the contact surface between the cam protrusion 3 b and the sliding body cam 6 a at the time of writing shown in FIG. 10B is a position where the contact surface is further depressed from the first slope of the inner cylinder cam 2 b. ing. This is because the clip retaining ball 2 d and the sliding body 6 are not separated from each other in order to firmly receive the component force in the rotational direction of the repulsive force by the spring 5 on the cam projection 3 b with the vertical wall of the shaft cam 1 a. A predetermined play is provided at the engaging portion with the locking projection 6b so that it is pushed to the above position. When the safety is activated, the clip 2a is lifted, and the locking projection 6b of the sliding body 6 and the locking ball 2d at the tip of the clip 2a are disengaged at the position where this play is eliminated. The first vertical movement distance h of 0 D is equal to the first vertical movement distance f of FIG. 9B in the second embodiment.
図 1 2 A〜Dに本発明の実施形態との比較例 （試作機） を示す。 本形態は、 セーフティー機能付きの筆記具において、 上記の衝撃緩 和対策を施さない形態である。 内筒カム 2 b ' の第二の斜面に段差 を設けておらず、 リターン動作時、 セーフティー動作時とも 1回の 垂直移動となっている。 その距離 g、 i と、 気泡発生数を表 1 に示 上記構成としたのは、 垂直移動部分を 1箇所として、 内筒カム 2 b ' の斜面 2 h ' の部分での減速で衝撃緩和を図ろうとしたもので あつたが、 1回の垂直移動 （リターン動作時 ： 距離 g、 セーフティ 一動作時 ： 距離 i ) での衝突の衝撃が大きく、 衝撃緩和効果は不十 分であった。 Figures 12 A to D show a comparative example (prototype) with the embodiment of the present invention. This form is a form that does not take the above-mentioned countermeasures for impact relaxation in a writing instrument with a safety function. There is no step on the second slope of the inner cylinder cam 2b ', and the vertical movement is performed once during both return operation and safety operation. Table 1 shows the distances g and i and the number of bubbles generated. The above configuration was designed to reduce the impact by reducing the speed at the slope 2 h 'of the inner cylinder cam 2 b' with one vertical movement part. Return operation: Distance g, Safety Single operation: Distance i) The impact shock was large, and the impact mitigation effect was insufficient.
本比較例の構成に対し、 第二、 第三の実施形態 （図 8 A〜図 1 0 D ) は、 内筒カム 2 bの第二の斜面の前後半に軸方向の段差を設け るために、 図において前半の斜面の高さを上げ、 軸筒カム l aの縦 壁部分を短縮してセーフティ一動作時にカム突起 3 bが通過するた めの間隔を確保したものである。  Compared to the configuration of this comparative example, the second and third embodiments (FIGS. 8A to 10D) provide an axial step on the front and rear half of the second slope of the inner cylinder cam 2b. In the figure, the height of the slope in the first half is increased and the vertical wall portion of the shaft barrel cam la is shortened to ensure a space for the cam protrusion 3b to pass during the safety operation.
表 1 table 1
Figure imgf000019_0001
表 1 に示すように、 本実施形態 1〜 3では、 カム突起 3 bの 1回 の垂直移動距離は従来の構成におけるものに比べて短縮され、 これ に伴いカム斜面の衝突時の衝撃も緩和された。 気泡発生数を従来の 構成におけるものと比較すると、 本実施形態 1〜 3では衝撃の影響 が緩和されていることが分かる。
Figure imgf000019_0001
As shown in Table 1, in the first to third embodiments, the vertical movement distance of the cam projection 3b at one time is shortened compared to that in the conventional configuration, and the impact at the time of the collision of the cam slope is mitigated accordingly. It was done. The number of bubbles generated Compared with the configuration, it can be seen that in Embodiments 1 to 3, the impact is reduced.
以上説明したように、 本発明により リターン動作時、 セーフティ 一動作時の衝撃を緩和することができるため、 水性インクゃゲルイ ンクを使用した場合でも、 ィンク漏れや筆記かすれを生じないノッ ク式の筆記具を少ない部品点数にて提供することができる。  As described above, according to the present invention, the shock at the time of the return operation and the safety operation can be alleviated. Writing instruments can be provided with a small number of parts.

Claims

請 求 の 範 囲 The scope of the claims
1 . 前端に筆記部を有するリフィールと、 それを後方へ付勢する スプリングと、 上記リフィールの後方に配置され上記リフィ一ルに 連動して軸筒後端より突出するノック棒を有し、 該ノック棒を押圧 してリフィ一ルを上記軸筒の前端から突出させることによって筆記 位置となるノック式筆記具であって、 1. A refill having a writing portion at the front end, a spring for urging the refill, and a knock bar disposed behind the refill and projecting from the rear end of the shaft cylinder in conjunction with the refill, A knock-type writing instrument that becomes a writing position by pressing a knock bar and causing the refill to protrude from the front end of the shaft cylinder,
上記ノック棒とリフィ一ルとの間にリフィ一ルを支持する回転子 を備え、 ノック棒と上記回転子はそれぞれに対応した回転用のカム 斜面を有しており、 上記スプリングの反発力により、 軸方向前方お よび後方へのノック動作によって回転子が所定角度ずつ一定方向に のみ回転し.、  A rotor for supporting the refill is provided between the knock bar and the refill, and the knock bar and the rotor have rotating cam slopes corresponding to the rotor, respectively, and the repulsive force of the spring The axially forward and backward knocking operation causes the rotor to rotate only in a certain direction by a predetermined angle.
リフィールが軸筒内に没入した状態からノック操作を行うと、 回 転子の円筒部側面に設けられた位置決め用のカム斜面がこれに対応 して内筒に設けられたカムの第一の斜面に当接し、 回転子の上記位 置決め用のカムの垂直面が内筒に設けられたカムの縦壁に当接する ことにより軸方向荷重および回転力を支持されてリフィ一ルを上記 筆記位置に保ち、  When the knocking operation is performed with the refill immersed in the shaft cylinder, the positioning cam slope provided on the side surface of the cylindrical portion of the rotor corresponds to the first slope of the cam provided on the inner cylinder. The vertical surface of the positioning cam of the rotor is in contact with the vertical wall of the cam provided on the inner cylinder, so that the axial load and the rotational force are supported and the refill is placed in the writing position. To keep
リフィールが筆記位置にある状態からノック操作を行うと、 回転 子の上記位置決め用のカム斜面が、 上記カムの縦壁に連続して内筒 に設けられたカムの第二の斜面と当接し、 次に内筒に設けられた力 ムの第三の斜面に当接して回転し、 後退限位置に移行してリフィ一 ルを収納位置に保つように構成されるノック式筆記具において、 内筒に設けられた上記カムの第三の斜面は、 軸方向に段差を有し ている  When the knocking operation is performed from the state where the refill is in the writing position, the cam slope for positioning the rotor contacts the second slope of the cam provided on the inner cylinder continuously to the vertical wall of the cam, Next, in the knock type writing instrument configured to rotate in contact with the third inclined surface of the force provided on the inner cylinder and move to the retreat limit position to keep the refill in the storage position, The third slope of the cam provided has a step in the axial direction.
ことを特徴とするノック式筆記具。 Knock-type writing instrument characterized by that.
2 . 前端に筆記部を有するリフィールと、 それを後方へ付勢する スプリングと、 上記リフィールの後方に配置され上記リフィ一ルに 連動して軸筒後端より突出するノック棒を有し、 該ノック棒を押圧 してリフィ一ルを上記軸筒の前端から突出させることによって筆記 位置となり、 クリ ツプの係止玉が摺動体の係止突起に係止すること で上記筆記位置を保持するノック式筆記具であって、 2. A refill with a writing part at the front end and urging it backwards A spring and a knock bar disposed behind the refill and projecting from the rear end of the shaft cylinder in conjunction with the refill; pressing the knock bar causes the refill to project from the front end of the shaft cylinder; A knocking writing instrument that holds the writing position by locking the clip's locking ball to the locking projection of the sliding body,
上記ノック棒とリフィ一ルとの間にリフィールを支持する回転子 を備え、 ノック棒と上記回転子はそれぞれに対応した回転用のカム 斜面を有しており、 上記スプリングの反発力により、 軸方向前方お よび後方へのノック動作によって回転子が所定角度ずつ一定方向に のみ回転し、  A rotor for supporting the refill is provided between the knock bar and the refill, and each of the knock bar and the rotor has a cam slant for rotation corresponding to each of them. Knocking forward and backward in the direction causes the rotor to rotate only in a certain direction by a predetermined angle,
リフィ一ルが軸筒内に没入した状態からノック操作を行うと、 回 転子の円筒部側面に設けられた位置決め用のカム斜面がこれに対応 して内筒に設けられたカムの第一の斜面及び上記摺動体に設けられ たカム斜面に順に当接し、 回転子の上記位置決め用のカムの垂直面 が軸筒に設けられたカムの縦壁に当接することにより軸方向荷重お よび回転力を支持されてリフィールを筆記位置に保ち、  When the knocking operation is performed from the state where the refill is immersed in the shaft cylinder, the positioning cam slope provided on the side surface of the cylindrical portion of the rotor corresponds to the first cam of the cam provided on the inner cylinder. Axial load and rotation by abutting in turn on the inclined surface of the cam and the cam inclined surface provided on the sliding body, and the vertical surface of the positioning cam of the rotor abutting on the vertical wall of the cam provided on the shaft cylinder Supporting the force, keep the refill in writing position,
リフィールが筆記位置にある状態からノック操作を行うと、 回転 子に備えられた上記位置決め用のカム斜面が、 軸筒に設けられた力 ム斜面と当接し、 さらに内筒に設けられたカムの第二の斜面と当接 して回転し、 後退限位置に移行してリフィールを収納位置に保つと ともに、  When the knocking operation is performed with the refill in the writing position, the positioning cam slope provided on the rotor contacts the force slope provided on the shaft cylinder, and further the cam provided on the inner cylinder Rotates in contact with the second slope, moves to the retreat limit position, keeps the refill in the stowed position,
軸筒の切り欠き部に、 長手方向に移動可能に設けられた摺動体は 内向き突起を有し、 リフィールが筆記位置にあるときは、 上記内向 き突起を回転子の位置決め用のカムの後端に係合させ、 摺動体に形 成された係止突起がクリ ップ本体に形成された係止段部に係止して リフィールを筆記位置に保ち、  The sliding body provided in the notch portion of the shaft cylinder so as to be movable in the longitudinal direction has an inward projection, and when the refill is in the writing position, the inward projection is placed behind the cam for positioning the rotor. Engaging with the end, the locking projection formed on the sliding body is locked to the locking step formed on the clip body, keeping the refill in the writing position,
摺動体の上記係止突起とクリ ップ本体の上記係止段部との間の係 止が解除されると、 スプリングによってリフィ一ルが摺動体と共に 後退位置まで戻され、 さらに回転子の位置決め用のカムが、 軸筒に 設けられたカム斜面の後方に設けられた隙間を通過することにより 、 後退限位置に移行することで、 リフィールを収納位置に保つよう に構成されるノック式筆記具において、 The engagement between the locking projection of the sliding body and the locking step of the clip body When the stop is released, the refill is returned to the retracted position together with the sliding body by the spring, and the rotor positioning cam passes through the gap provided behind the cam slope on the shaft cylinder. In the knock-type writing instrument configured to keep the refill in the retracted position by moving to the retreat limit position,
内筒に設けられた上記カムの第二の斜面は、 軸方向に段差を有す る  The second slope of the cam provided on the inner cylinder has a step in the axial direction.
ことを特徴とするノック式筆記具。 Knock-type writing instrument characterized by that.
PCT/JP2008/064660 2007-08-20 2008-08-11 Knock-type writing instrument with impact relaxing device WO2009025248A1 (en)

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WO2011025047A1 (en) * 2009-08-28 2011-03-03 三菱鉛筆株式会社 Click type writing implement having shock-mitigating function

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JP4731501B2 (en) * 2007-01-23 2011-07-27 三菱鉛筆株式会社 Knock-type writing instrument
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CN101883687A (en) 2010-11-10
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EP2186648A4 (en) 2010-11-24
EP2186648A1 (en) 2010-05-19
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JP4522442B2 (en) 2010-08-11
JP2009045825A (en) 2009-03-05

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